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Pectoralis Major
- Clavicle, sternum and costal cartilages of 2nd to 6th ribs
- Greater tubercle and lateral lip of the intertubercular sulcus of humerusAdducts, Medially Rotates arm @ shoulder jt
- Also Flexes (clavicular) and Extends (sternal)
- Medial and Lateral Pectoral Nerves
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Latissimus Dorsi
- Spines of T7-L5, Lumbar Vertebrae, Crests of Sacrum and Ilium, Inferior 4 ribs via thoracolumbar fascia
- Intertubercular Sulcus of Humerus
- Extends, Adducts, and Medially Rotates arm @ shoulder jtThoracodorsal Nerve
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Deltoid
- Acromial extremity of Clavicle, Acromion, Spine of scapula
- Deltoid Tuberosity of Humerus
- Abduction (whole), Flexion and Medial Rotation (ant fibers), Extension and Lateral Rotation (post fibers)
- Axillary Nerve
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Subscapularis
- Subscapular fossa of scapula
- Lesser Tubercle of humerus
- Medial Rotation of arm @ shoulder jtUpper and Lower Subscapular Nerve
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Supraspinatus
- Supraspinous fossa of scapula
- Greater Tubercle of humerus
- Assist Deltoid in Abduction of arm @ shoulder jt
- Suprascapular Nerve
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Infraspinatus
- Infraspinous fossa of scapula
- Greater Tubercle of Humerus
- Lateral Rotation of arm @ shoulder jtSuprascapular Nerve
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Teres Major
- Inferior angle of scapula
- Medial Lip of Intertubercular sulcus of humerus
- Extension, Adduction, Medial Rotation of arm @ shoulder jt
- Lower Subscapular Nerve
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Teres Minor
- Inferior lateral border of scapula
- Greater Tubercle of Humerus
- Laterally Rotates and Extends arm @ shoulder jtAxillary Nerve
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Coracobrachialis
- Coracoid Process of scapula
- Middle of medial surface of shaft of humerus
- Flexes and Adducts arm @ shoulder jtMusculocutaneous Nerve
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